virtualbox.org

I've been using Fedora 12 with Virtual box, host is Mac OSX.6.2. I got the prompt the other day to update to the latest version - now Fedora 12 (32 bit) won't start!

I get the bars at the bottom next to the Fedora 12 writing, however it then just goes to a blank screen with the flashing cursor at the top. Normally it would go to the log in screen.

I've got a ton of work saved on my Fedora HDD through virtualbox - if anyone out there can offer any guidance I'd be very grateful!

OpenSUSE 11.2 works fine after the VBox upgrade as does Ubuntu. Just seems to be a problem with the Fedora system.

Tom

OK. I have more info... if you are reading this hopefully this will help!

Just reinstalled Fedora 12. Installation went perfectly. I started it up, everything worked fine.

Then I installed guest additions! The installation went well and the success message came up in the terminal. I restarted the machine and then... nothing! Back to the black screen when it should have showed the login screen.

It must be something to do with guest additions... anyone help!

I have the same problem. On my system it appears that Fedora is not "dead" but that the Xserver failed to start.
At the "black screen" I was able to open a new virtual terminal using "fn+option+F2" key combo. From there
I could log in and access Fedora via the command line.

Based on you observation of guest additions problems, I tried disabling the three vboxaddon services in
/etc/init.d/, did a yum update, and changed the selinux default in /etc/sysconfig/selinux to permissive.
However I still get the "black screen" on startup.

If my Xorg.0.log file is of interest to any developer for debugging I can forward it on.

See my posting under Windows host, Fedora guest. I think the same thing may be happening for you. Essentially, I found is that you can not shut down the virtual machine when the window is at the host's full screen resolution. To get back to a working state, you have to jump through a bunch of hoops (like hitting Ctrl+F2, or whatever it is on the Mac) to get a command line prompt, create an xorg.conf file using a fixed screen resolution, start up again, and then delete the xorg.conf file. (But remembering not to shut down Fedora at full screen resolution, or you'll have to do it all over again.)
Hope this helps.